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Nickel(II) carbonyl, ammonia, and aceto-nitrile complexes supported by a pyridine dipyrrolide pincer ligand.

ABSTRACT: The synthesis, isolation and crystal structures of nickel(II) carbonyl, aceto-nitrile and ammonia complexes supported by a dianionic, pyridine dipyrrolide pincer ligand [pyrr2py]2-, namely, carbonyl[2,2'-(pyridine-2,6-di-yl)bis-(3,5-di-p-tolyl-pyrrolido-?N)]-nickel(II), [Ni(C41H33N3)(CO)], ammine[2,2'-(pyridine-2,6-di-yl)bis-(3,5-di-p-tolyl-pyrrolido-?N)]nickel(II), [Ni(C41H33N3)(NH3)], and (aceto-nitrile-?N)[2,2'-(pyridine-2,6-di-yl)bis-(3,5-di-p-tolyl-pyrrolido-?N)]nickel(II), [Ni(C41H33N3)(CH3CN)], as well as the free ligand 2,6-bis-(3,5-di-p-tolyl-pyrrol-2-yl)pyridine, C41H35N3 or [pyrr2py]H2 are reported. The nickel complexes are four-coordinate and adopt a square-planar geometry. The CO stretch of the nickel-bound carbon monoxide ligand of [pyrr2py]Ni(CO) has been observed at 2101?cm-1. The ammonia and aceto-nitrile complexes, [pyrr2py]Ni(NH3) and [pyrr2py]Ni(NCMe) feature all-nitro-gen coordination spheres around nickel consisting of different N-donor ligand types.

SUBMITTER: Dias HVR 

PROVIDER: S-EPMC7643235 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Nickel(II) carbonyl, ammonia, and aceto-nitrile complexes supported by a pyridine dipyrrolide pincer ligand.

Dias H V Rasika HVR   Pramanik Abhijit A  

Acta crystallographica. Section E, Crystallographic communications 20201009 Pt 11

The synthesis, isolation and crystal structures of nickel(II) carbonyl, aceto-nitrile and ammonia complexes supported by a dianionic, pyridine dipyrrolide pincer ligand [pyrr<sub>2</sub>py]<sup>2-</sup>, namely, carbonyl[2,2'-(pyridine-2,6-di-yl)bis-(3,5-di-<i>p</i>-tolyl-pyrrolido-κ<i>N</i>)]-nickel(II), [Ni(C<sub>41</sub>H<sub>33</sub>N<sub>3</sub>)(CO)], ammine[2,2'-(pyridine-2,6-di-yl)bis-(3,5-di-<i>p</i>-tolyl-pyrrolido-κ<i>N</i>)]nickel(II), [Ni(C<sub>41</sub>H<sub>33</sub>N<sub>3</sub>)(N  ...[more]

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